Know Your Environment. Protect Your Health.

Perfluorooctanoic acid (PFOA)

East Troy Waterworks

Perfluorooctanoic acid (PFOA) is a member of a group of perfluorinated chemicals used in many consumer products. PFOA and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

 

15

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
20220.156 ppt51ND - 0.781 ppt
20230.533 ppt63ND - 1.10 ppt
2024ND40ND

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.09 ppt

The EWG Health Guideline of 0.09 ppt for PFOA was was defined by EPA's final toxicity value from the Office of Water’s Final Human Health Toxicity Assessment. This health guideline protects againat cardiovascular harm and harm to fetal growth.

EPA Maximum Contaminant
Level (MCL): 4 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2022-06-21626717001ND
2022-06-21626709001ND
2022-06-21626710001ND
2022-06-21626712001ND
2022-07-196320250010.781 ppt
2023-04-04WB01891-03ND
2023-04-04WB01891-01ND
2023-04-04WB01891-05ND
2023-04-04WB01891-071.000 ppt
2023-08-14WB05073-031.10 ppt
2023-11-15WB07410-011.10 ppt
2024-04-23115798PND
2024-04-23115799PND
2024-04-23115801PND
2024-04-30115800PND